Help me in solving ZOOZ problem

help
,
1

My issue

even with correct output, code is not accepted

My code

#include <iostream>
using namespace std;
void odd(int m){
    int k=-1;
      for(int i=0;i<m;i++){
                if(k==-1)
                   { cout<<"0";
                    k=k*(-1);
                   }
                else if (k==1)
                {
                    cout<<"1";
                    k=k*(-1);
                }
            }
}
int main() {
    int n;
    cin>>n;
    while(n--){
        int m;
        cin>>m;
        if(m==4)
        cout<<"1001"<<endl;
        if(m==3)
        cout<<"010"<<endl;
        if(m>3 && m%2!=0)
        {
            odd(m); 
            cout<<endl;
        }
        if(m>4 && m%2==0)
        {
            cout<<"10";
            odd(m-4);
            cout<<"01"<<endl;
        }
        
        
    }
	return 0;
}

Problem Link: ZOOZ Problem - CodeChef

2

@g_h_0_5_t
for test case
n=6
your output is 100101
which has 4 - “10” and 5 - “01” as subsequence which is not equal